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801S - Vibration Sensor Module

Description of 801S Vibration Sensor

801S is a vibration sensor with a gold alloy plated shock sensor and an onboard comparator IC. The sensor is capable of providing real-time vibrational data along with micro shock detection and about 60,000,000 times shock guaranteed.


Features and Specifications of 801S Vibration Sensor

Here are some features and specifications of the vibration sensor module:

  1. Voltage Input: 5V
  2. Analog and TTL level signal output
  3. Adjustable sensitivity
  4. Micro shock detection
  5. Gold alloy plated Shock sensor


Pin Configuration of 801S Vibration Sensor

Below is the pin configuration of the 801S module. It is a 4 pin module with both analog and digital output pins.

Pin Type

Pin Description


Voltage Input pin


Ground terminal


Digital Signal Output pin


Analog Signal Output pin

Note: Some 801S vibration sensor modules may also just come with 3 pins. Those modules do not have an analog output pin for real-time vibrational output monitoring and just provide digital high and low when a threshold value is reached.


Alternatives for 801S Vibration Sensor

SW-420, RS-Pro vibration sensor, SW-520, Seeed Studio 101020054.


Note: More technical information can be found in the 801S Sensor Datasheet linked at the bottom of this page.


Components and Working of 801S Vibration Sensor Module

The vibration sensor module consists of two main chips; 801S and an LM393 comparator. The module also comes with a sensitivity adjust potentiometer to set a threshold value for the output signal.

A vibration sensor is a piezoelectric sensor. It consists of a transducer that converts mechanical energy caused by vibration or change in motion to an electrical signal output by the principle of the piezoelectric effect. The sensor can monitor the changes in acceleration, pressure, temperature, and force and convert them into electrical output.


Connecting 801S Vibration Sensor with MCU/MPU

Connections of 801S Vibration sensor are shown in the image below. 801S is a 4-pin module having power pins along with digital and analog output pins. The VCC pin of the sensor module is to be connected to the +5V pin, the ground is connected to the ground terminal of the microcontroller. The analog pin (A0) and digital pin (D0) on the sensor module are connected to the analog and digital terminals of the microcontroller, respectively.

801S Vibration Sensor with MCU

As mentioned earlier in the pin configuration section, there is another module of the 801S vibration sensor which has 3 pins. The module only has power pins and a digital output pin, which can be connected to the digital pin of a microcontroller.


Applications of 801S Vibration Sensor

Here are some applications of the 801S vibration sensor:

  1. Mining and metalworking industry
  2. Used in gas turbines
  3. Used to monitor shaft static displacements, unbalance response, and misalignments.


2D Model of 801S Vibration Sensor

The 2D model of the vibration sensor module is shown below. The dimension values can be used to design custom footprints of the module.

801S Sensor Dimensions

Component Datasheet

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